Replace constant instead of redefining it so that we don't get an ugly warning. Thanks @skade https://github.com/padrino/padrino-framework/pull/1181#issuecomment-15458360.
Using %[] as @DAddYE suggested.
update Twitter bootstrap
Merge pull request #1191 from WaYdotNET/update-bootstrap

update Twitter bootstrap
Merge pull request #1187 from padrino/comply-to-sinatra-supported-http-verbs

Fix warning message on VALID_HTTP_VERBS
simple_format should be marked as html_safe (Closes #1194)
[helpers] Escape text before simple_format
Fix "bootstrap.min" path of production environment
Merge pull request #1197 from tyabe/fix_js_path

Fix "bootstrap.min" path of production environment
Add html_safe in set_home and add
Merge pull request #1199 from WaYdotNET/fix-breadcrumbs

Breadcrumbs: html_safe in set_home and add
Only add database tasks to Rakefile if ORM is anything other than :none
Merge pull request #1201 from padrino/carefully-generate-orm-tasks-on-Rakefile

Only add database tasks to Rakefile if ORM is anything other than :none
Migrations are timestamped if so specified in .components file
Fixed test helper, replaced hardcoded value with param
add `migration_format` option to specify number or timestampe migration file format
update CHANGES
Added padrino-performance to release list
Put fix "Preserve spaces for text_area using admin/haml" on
0048cef99923c1eac6499161c0b1a01e569807de back.
Fixes #1207.